Firefighters work near a building emitting smoke after explosions in North Andover, Massachusetts, United States in this September 13, 2018 still image from social media video footage by Boston Sparks. Boston Sparks/Social Media/via REUTERS

There have been 19 incidents involving gas distribution lines so far this year in the United States, according to data from the U.S. Pipeline and Hazardous Materials Safety Administration.

Gas distribution lines are the smaller gas pipelines that distribute gas to homes and businesses. These incidents resulted in two deaths and an estimated 29 injuries, according to data on PHMSA’s website.

Below are statistics for gas-distribution pipeline accidents over the past two decades.